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[ALSA] This patch removes open_mutex from the ad1848-lib as

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open and close operations are called only from pcm layer
and mutexed there with pcm->open_mutex.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Krzysztof Helt 2007-10-16 14:54:14 +02:00 committed by Jaroslav Kysela
parent c2cbdbb158
commit ca2df45a07
2 changed files with 3 additions and 12 deletions
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1
include/sound/ad1848.h
View File

@ -154,7 +154,6 @@ struct snd_ad1848 {
#endif
spinlock_t reg_lock;
struct mutex open_mutex;
};
/* exported functions */

14
sound/isa/ad1848/ad1848_lib.c
View File

@ -378,11 +378,9 @@ static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if (chip->mode & AD1848_MODE_OPEN) {
mutex_unlock(&chip->open_mutex);
if (chip->mode & AD1848_MODE_OPEN)
return -EAGAIN;
}
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
@ -423,7 +421,6 @@ static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = mode;
mutex_unlock(&chip->open_mutex);
return 0;
}
@ -432,11 +429,8 @@ static void snd_ad1848_close(struct snd_ad1848 *chip)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if (!chip->mode) {
mutex_unlock(&chip->open_mutex);
if (!chip->mode)
return;
}
/* disable IRQ */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
@ -462,7 +456,6 @@ static void snd_ad1848_close(struct snd_ad1848 *chip)
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = 0;
mutex_unlock(&chip->open_mutex);
}
/*
@ -880,7 +873,6 @@ int snd_ad1848_create(struct snd_card *card,
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->reg_lock);
mutex_init(&chip->open_mutex);
chip->card = card;
chip->port = port;
chip->irq = -1;